Vulcanizing apparatus



J. R. GAMMETEH.

VULCANIZING APPARATUS. APPLICATION FILED )AN.30,192'2.

atented May 2, 1922.

hlfl

Inner/Lm dov/222@ mmef 55mm insertion or remove ii'isertion or removal of a mold by depressing the corresponding pair ot handle-arms 33 or 33a -into a horizontal position and thereby straightening` the corresponding togglee 3l, 32, the platens being closed again upon the fresh mold by restoring said pair of liandle-arins to its upwardly inclined position. In 1, the third. mold from the top of the tier is shown in the act oit' being cliangedwhile the adjacent platens ii" are separated in the manner described. This greatly speeds up the operation of changing the molds, biit makes it unnecessary to discharge and,y recharge the hy'- draulic cylinder for each change r ylthe our* ingf periods for the several molds are made to begin at different times, so as to overlap and .require thechanging, of only one mold at a time. TWhen the platens are closed upon the mold 27, the central space siirrounded by said mold is closed at top and bottom by the platens and is effectively sealed by the gaskets 30. Upon admitting compressed air i'roin 4the trunk pipe 2li., through the corresponding` branch 23, duct 21, the central mold space, and valve pipe 129, into the interior of the tube 28, which is being` cured, said tube Will be distended against the mold in the desired manner, and when comes to changingr the molds, no pipe-couplings have to be connected and dis connected, it being merely necessary to turn oli and exhaust the compressed air from the tube at the cock 25, before the press compartment is opened to release the mold.

y invention is not limited to the use of all of the described expedienjts in' a single apparatus, and the details may be variously modified.

.'I claim:

l'. In a press, the combination of a pair 'o't press members, means foryieldingly jtorcing said members together, and positive means' acting counter to the pressure of said forcing means forseparating said members.

2.111. a press, the combination or' a pair of press platensymeans for yieldingly to'rcingsaid platens together, and a lever device acting' counter t'osaid forcing means for positively separatin said platens for the of the Work. 'i 3, ln a p1ess,`tlie combination of a pair of press platens, a iinid-pressure device for yicidingly Aforcing said platens together, and lever mechanism acting counter to said device for positively separating said platens.

et. ln a press, the combination of a pair of press platens, means toryieldingly forcing said platens together, a pair of toggle links interposed between the platens and adapted when straightened to :torce them apart, and a relatively-long lever-handle on one oip4 said links.l

5. in a press, the combination of a pair of relatively movable .end platens,` means for yieldingly forcing them together, an iiitermediate platen, and means'acting counter 80 to said forcing means for individually opening either of the compartments between the respective end platens and the intermediate platen without opening the other such compartment.

6. ln a press, the combination of a pair of relativeiy-movable end platens, means for yieldingly forcing them together, an intermediate floating platen, and individuallyoperable toggles acting between said iioating platen and the respective end platens' for openinga either of the compartments on opposite sides 0i said floating platen against the pressure of said forcing means without opening the other suchcompartmei'it. 95

7. in a press, the combination of a pair of ielatively-movable end platens, means for yieldingly forcingl them together, a series of intermediate floating' platens, and a series oi positively-actinp` devices interposed between successive pairs of platens for openingr the compartment between any'such pair against the pressure of said forcing means Without opening the other' such compartments.

S. ln a press, the combination ot a fixed ripper platen, a vertically-movable iowen platen havingl liiid-pressnre operating means, and a lever device interposed between said platens for depressing the loWerdlO platen against the fluid pressure. i

9. in a press, the combination of a fixed ripper platen, a verticallymovable lower platen having' lliidepressure operatingl means, one' or .more intermediate floatinga 115 platens, and lever devices interi'iosedi between. the several plateiis for opening-the compartment between any pair against the {inid pressure without opening the .other compartments.

i0 in a heating press, the combination of a pair of relatively-movable platens haviingI heating connections, means for yieldingly forcing said platens together, and positive means acting counter to the pressure of said 125 forcing means for separating the platens.

1l. In 'a heating press, the combination of a pair of iellatiif'elyzfinovable end platens and' one' or more intermediatefloating platens, heating1 connections to said platens, means 130 for yieldingly forcing the platens together, duct for supplying apressure Huid to the and lever devices interposed between the several plate-ns for individually and positively separatingl the members ny `pair against the pressure of said forcing ie'ans.

the mold.`- l l l 16. ln a press, lthe combination of a pair' of relatively-movable platens, at least one of ychamber enelosedbetween said platens and l I 12. ln a heatingr press, the combinatie ot a pair of relatively-movable platens ada' ted to compress between them an annular mold,

means for supplying heat to one' of said' platens,

and a duct in one of the platens, independent of said heat-supplying means' and havingan outlet at the operatingface of e said platen `for supplying fluid under pres- .againstv the, 'an annular mold removably mounted between the 'pl'atens and forming aclosed` which-is rovided with heating means, means for yieldingly forcing saidvplatens together,

mechan'i'sn'iA foiff separating the platens pressure of said 'forcing means,

chamber therewith, a pipe vconnected with one of the platens vfor supplying 'compressedv y 35 mold and a pail' of relatively-movable pressair to sa'idfehamben and valve mechanism y connected with saidV pipe-for charging and discharging said chamber.'

17'. In e a 'hot-plate press, of a', fixed npperfplaten having'stearn connections and, a movable lower platenjorovided with hydraulic actuatingA meansz a se-l lries of intermediate platens having fsteam v connections and also having compressedla'ir connections .and compressedair outlets' at their upper surfaces, annular moldslremovably mounted in the compartments between the platens and adapted to receive comm pressed vair through their inner peripheries from. the chambers enclosed between them and the adjacent platens, `and lever devices vinterposed between the successive pairs' of platens for individually separating the mein- 4bers of any pair against the hydraulic pressure.- v f ln witness whereof l have hereunto set my hand this 27th day of January, 1922.

Jenn n. Gaan/inane'.

sure to the space between the platens. i5 13. ln a heating-press platen, a zig-Zag` hea-ting duct formed in` the lbody vof the platen, and an independent {luid-pressure supply duct formed inthe platen between two coursesv of said heating duct and having;l 20 an outlet at one face of the platenvin the central region thereof. le. ln a heating press, the combination of a pair of relatively-movable platens, at least one of which is provided with means for the circulation of a heating fluid, an annular mold forming a. closed chamber with said platens, and a'duct in one -o the platens for carrying a pressure `fluid to said chamber.

15. ln a heating press, the combination of an annular mold-adapted to contain an in- A atable, tubular, rubber article and .having an opening in its inner peripheral-Wall for the passage of an inating pipe, annular gaskets at the upper, and lower faces of said at least one or' which is piped'lor a piatens,

.iiuid one of said latens havinof a f heating the combination A I 

